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High frequency behavior of a space charge rotating in a magnetic field

Blewett, John P. and Ramo, Simon (1940) High frequency behavior of a space charge rotating in a magnetic field. Physical Review, 57 (7). pp. 635-641. ISSN 0031-899X. doi:10.1103/PhysRev.57.635.

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A theoretical discussion is given of the propagation of electromagnetic waves in a space charge which is rotating under the influence of a uniform magnetic field. Equations are derived for the relations between the amplitudes of the electric and magnetic fields, charge density, electron velocities, the applied magnetic field, the frequency, the phase velocities, and the effective dielectric constant of the space charge region. In particular, the natural frequencies are computed for such a space charge rotating about an infinitesimal conductor and enclosed by a coaxial conducting cylinder. The predicted resonant frequencies agree well with experimentally observed values for magnetron oscillators. The theory here developed is also applicable to other devices in which a rotating space charge is utilized.

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Additional Information:©1940 The American Physical Society. Received 17 January 1940. It is a pleasure to acknowledge our indebtedness to Mr. W.C. Hahn for many stimulating discussions and suggestions.
Issue or Number:7
Record Number:CaltechAUTHORS:BLEpr40
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5746
Deposited By: Tony Diaz
Deposited On:31 Oct 2006
Last Modified:08 Nov 2021 20:28

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